<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>12-输出年份的2月份天数</title>
</head>
<body>
    <script>
         // 用户输入年份，输出当前年份2月份的天数
  /*        function backDay() {
            let year = prompt('请输入年份');
            let flag = isLeapYear(year);
            if (flag) {
                console.log(year + '年的2月份有29天');
            } else {
                console.log(year + '年是平年,2月份有28天');
            }
        }
         backDay();

        //  判断闰年函数
        function isLeapYear(year){
            let result = false;
            if (((year % 4 == 0) && (year % 100 != 0)) || (year % 100 == 0 && year % 400 == 0)){
                result = true;
            }
            return result;
        }
        backDay();
 */




        // 假设偶数是红码
        
       function code(age2){ 
            let result = false;   // 绿  
            if(age2 % 2 == 0){/*  */
                result = true;     //红
            }
                return result;
        }
        let age1 = prompt('请输入您的年龄');
        let result = code(age1);
        console.log(result);
    
    </script>
</body>
</html>